Inking apparatus for printing-presses



(No Model.)

G. W. PROUTY, INKING APPARATUS FOR PRINTING PRESSES.

Patented Feb. 21,

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liaventor: Gcm'ge WIrouly,

- UNITED STATES am anion,

GEORGE W. PBOUTY, OF BOSTON, MASSACHUSETTS.

lNKlNG APPARATUS FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No.3'78,l10, dated February 21, 1888.

Application filed June ll, 1887.

To all witmn it may concern:

Be it known that I, GEORGE XV. PROUTY, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Inking Apparatus for Printlug-Presses, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to the inking apparatus of printing'presses, and especially to the construction of the trucks for the inkingrollers.

It is awell-known fact that the composition rollers for inking the type on printing-presses are gradually reduced in diameter by the shrinking of the composition and wear caused by constant contact with the type, and, also, that it is necessary that said inking rollers should be supported by trucks mounted upon their shafts and resting upon suitable bearers to prevent injury to said rollers by the type being forced too far into their yielding surfaces. Owing to the shrinkage and wear of said inking-rollers, it has been found necessary, after using a set of inking-rolls for a certain tinie, to apply to their shafts support ing-trucks of a smaller diameter, or have the inking-rollers recast or made over, and hence it has forsome years been customary for manufacturers of presses to furnish two sets of trucks of different diameters with each press. To obviate the necessity of doing this, and thereby lessen the cost to ,the manufacturer, without affecting the length of time that the inking-rollers can be used before recasting them, is the object of my present invention; and it consists of supporting-trucks for the inkingrollers having a length at least twice the width of the bearers, and each truck having its length divided into two sections of different diameters, all so constructed and arranged that the section having the largest diameter shall restnpon the bearer when the composition inkingroller is new, and serve to support the same until said roll has become so shrunken or worn as to require a change, either in the diameter of said roll or of the supportingtruck, when the bearer-truck may be turned end for end upon the roll-shaft, and the section thereof having the smaller diameter will then rest upon the bearer, and thus permit the roll to bear upon the typeform with sufficient force to properly ink the same.

Figure l of the drawings is a side elevation Serial No. 240,705. (No model.)

of the upper portion of a printingpress illustrating my invention, with the bearer-trucks shown as they will appear when the composition rollers are new. Fig. 2 is a front elevation of a portion of one inking-roller, a bearertruck in the position it occupies when the roller is new, and a portion of one of the bearers; and Fig. 3 is a similar view of the same parts with the bearer-truck reversed, or in the position it should occupy after the 00mposition roller has shrunk or been reduced in diameter, say, about one-eighth of an inch, more or less.

In the drawings, A is the frame of the machine; B, the platen; O, the ink-distributing plate; I), the bearers; E, F, G, H, and I, a train of levers and connectingrods for operating the platen and inking-rolls, all constructed and arranged to operate in a well known manner. a

J is the bearer-truck, fitted to the shaft- (6 of the inking-roller J, which shaft projects beyond the truck J a sufficient distance to receive the saddle L. The bearer-truck J has its periphery divided into two sections, b and c, of different diameters, the section 0 being about one-eighth of an inch smaller than the section I).

hen the composition inking-roll J is new, the bearer-truck J is placed upon its shaft a, as shown in Fig. 2, with the section I) resting upon the bearer D; but when the roller J is reduced in diameter by shrinkage and wear to the size shown in Fig. 3 the bearer-truck is reversed, so that the section 0 will rest upon the bearer D, as shown in Fig. 3.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

In combination with the inking-rolls and bearers of a printingpress, a bearer-truck having its length divided into two sections of IOO 

